We recommend visiting the developer docs when you start using the API.

Merging videos using the Shotstack API is similar to the way videos are stitched in a timeline based editor with a start position on a timeline and length.

To merge clips together you simply set the next clip in the sequence to start when the previous clip finishes.

You can trim a video by using the start, length and trim properties.

You can add text to your video by using the Text Asset.

You control placement within the viewport by setting the position and offset properties of a clip. Each clip contains an asset type.

You can use any TTF or OTF font by referencing it in the JSON payload.

Yes. You can export in a variety of image based formats by changing the format property in the JSON payload.

Visual or audio glitches often happen when your source footage uses a variable frame rate.

When this footage is rendered at a fixed frame rate, extra frames might be added or dropped, causing glitches.

To avoid this, use fixed frame rate footage.